Thx on the compliment. I left the factory check valve in its original position. Once the compressor meets its set point all the lines of the inter coolers bleed off. That is why I put auto drains set to activate only while the compressor is running so they have pressure behind them. I just wired each one to the cold side of the pressure switch. My original pipes were actually steel with welded flanges between stages so I had to make new flanges with nipples welded to them to adapt to the compression fittings. It was a process and I am glad it’s done. I needed air so many times during the build and didn’t have it.
Tip for anyone: Plan thoroughly and get what you need, get things you might need, get things you probably won’t need because you will probably end up needing them then get extras of everything. Save your receipts and return what you don’t use. It’s one return trip for the returns vs a day of running back and forth. Good luck with your setup.
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